Posted: 8/26/2006 3:58:59 PM EDT
Will an M4 barrel work on an A3 upper receiver? Will a non-ramped barrel have any problems with an upper that is "ready for a M4 barrel?" Are there any real benefits to the M4?
Sign up for the ARFCOM weekly newsletter and be entered to win a free ARFCOM membership. One new winner* is announced every week!
You will receive an email every Friday morning featuring the latest chatter from the hottest topics, breaking news surrounding legislation, as well as exclusive deals only available to ARFCOM email subscribers.